Shaper.



tire s nan one CHARLES D. GIBSON AND HANS BAERBALCK, OF HAMILTON, OHIO,ASSIGNORS TO THE HAMILTON MACHINE TOOL COMPANY, OF HAMILTON, OHIO, ACORPORATION OF OHIO.

SHAPER.

Specification of Letters Patent.

Patented Mar. 28, 1911.

T all whom it may concern:

Be it known that we, CHARLES D. GIBSON, a citizen of the United States,and HANS BAERBALCK, a citizen of Germany, both residing at Hamilton,Ohio, have invented a new and useful Improvement in Shapers, of whichthe following is a specification.

Our invention relates to shapers of the class used for paring metal, andthe objects of our improvements are to form the ram with an imperforateor continuous arch and also an imperforate transverse wall forpreventing it from springing laterally in the slide and therebypreventing the tool from chattering; for obtaining greater accuracyunder extreme duty, and to provide simple and durable construction andassemblage of parts for securing increased facility of operation ande'liiciency of action. These objects are attained in the followingdescribed manner as illustrated in the accompanying drawings, in whichFigure 1 is a transverse vertical section with parts broken away of ashaper embodying our improvements; Fig. 2, a longitudinal section of theram with means for adjusting it longitudinally during action.

In the drawings, 1 represents the frame of a shaper formed with guides 2for the longitudinal movement therein of the ram 3 which is providedwith the usual head A and tool holder 5 and formed with a solid arch 6and an imperforate intermediate longitudinal arch or wall 7 to preventits edges from springing toward each other in the guides. A screw 8journaled at its ends in bearings 9 and 11 formed in the end walls ofthe ram may be rotated by means of the crank shaft 12 with the bevelgear connect-ions 13 therewith. An ordinary stop pin 14 serves to lockthe crank shaft with the screw in predetermined positions of rotativeadjustment. A nut 15 threaded on the screw 8 is fitted to slide in theguide 16 formed within the lower portion of the side walls of the ram toprevent said walls from springing inwardly. A link 17 connects said nutwith the top of the slotted oscillating arm 18 which arm is pivotallysecured at its opposite end to the frame in the usual manner (notshown).'

The bull gear 19 is formed with a stepped hub 21 whereby it is journaledin the stepped bearing 22 which is removably secured to the frame. Acrank pin 23 slidingly mountedon the bull gear movably engages with theslot in arm 18 for oscillating said arm and reciprocating the ram in theusual manner. A rod 24- adapted to engage with a crank at 25 isjournaled in the axial bore of the bull gear for adjusting theeccentricity of the crank pin in the ordinary manner.

A slotted guide plate 27 is secured on the end of gear 28 which isdriven from a gear 29 secured on the hub of the bull gear. A screw 44provided with a nut 45 serves to maintain the feed rod 39 in diiferentpositions of adjustmenton the guide plate 27 in the usual manner.

From the foregoing description the operation is evident. of the ram andalso the throw of the feed shaft may be changed during the action of themachine.

Having fully described our improvement what we claim as our inventionand desire to secure by Letters Patent: of the United States is 1. As anew article of manufacture, a ram formed with an imperforate top wall,ahorizontal partition thereunder, and with parallel edges adapted tomovably engage eX- ternally with fixed guides and internally with amember longitudinally adjustable therein.

2. As a new article of manufacture a shaper ram formed with animperforate top wall, an imperforat-e laterally arched longitudinalpartition thereunder, and with its edges terminating in slides adaptedto movably engage with suitable guides.

CHARLES D. GIBSON. HANS BAERBALGK.

Witnesses:

F. S. SNIVELY, Q. A. DAVIS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

The longitudinal position

